А) MgSo4+2NaOll = Na2So4+Mg(OH)2↓
Mg⁺² + So4⁻² + 2Na⁺ + 2OH⁻ = 2Na⁺ + So4⁻² + Mg(OH)2↓
Mg⁺² + 2OH⁻ = Mg(OH)2↓
б) (NH4)2Co3+2NaOH = Na2CO3+2NH3↑ + 2H2O
2NH4⁺ + Co3⁻² + 2Na⁺ + 2OH⁻ = 2Na⁺ + CO3⁻² + 2NH3↑ + 2H2O
2NH4⁺ + 2OH⁻ = 2NH3↑ + 2H2O
в) 2AgNO3+BaCl2 = 2AgCl↓ + Ba(NO3)2
2Ag⁺ + 2NO3⁻ + Ba⁺² + 2Cl⁻ = 2AgCl↓ + Ba⁺² + 2NO3⁻
2Ag⁺ + 2Cl⁻ = 2AgCl↓